This is a 1:4 scale 174″ (4.416m) vintage sailplane model designed by Chris Williams for 5-function R/C and include airbrakes and tow release. Construction is all wood with a flying weight around 8.6kg (19 lb.) 4 large CAD drawn plan sheets are well detailed.WING SECTION: HQ35/14 centre-section to HQ35/12 tipsWING AREA: Approx. 14 sq. ft.WING LOADING: 20 oz./sq. ft.